Parallels Locking Up Still getting this issue, it seams that if I set the processors to 4, I am guaranteed a frozen mac, if I leave the processors at 1, it is ok. The problem is that with a single processor, Windows 8 is not the best experience, it is very slow and lags, especially with Office 2013. This is very frustrating, to the point that I am considering abandoning my investment in Parallels over the years, and trying the competition. I use this for work, and cannot afford for it to be freezing my entire Mac multiple times a day. I have had my mac checked by Apple, and they did fine an issue, and replaced the logic board, but the problem with Parallels still exists, so it is not hardware. I am running the following. Hardware: - June 2012 MBP Retina - 16 GB RAM - Intel Core i7 2.7 GHz - 750GB SSD - This is the highest spec MBP Retina you can get at the time. Software: - Parallels Build 8.0.18483 Guest: - Windows 8 (Boot Camp Partition) - 3GB Ram - 4 vCPU - Video 1024 I am also getting issues with video corruption, where in apps, and also the background, I get lines and corrupted images, at times making it unusable, and requiring a reboot. I am not too happy with your product at the moment, these problems need to be resolved.